Yoo Jae-suk

Born in 1955. A professional South Korean entertainer and incredibly famous. He often gets hit by Kim Jong-kook (not too hard) for constantly bringing up Yoon Eun-hye in front of him.

Kim Jong-kook

51 years old. He works out a lot and is dead serious about fitness. He has a lot of physical skinship with Song Ji-hyo. He picks on Yang Se-chan a lot. He is extremely good at the 'try not to laugh' challenges.

Haha

48 years old. He frequently teases Kim Jong-kook and Song Ji-hyo about dating.

Song Ji-hyo

46 years old. She has a lot of skinship with Kim Jong-kook and hangs out with him often. She picks on Lee Kwang-soo a lot.

Lee Kwang-soo

42 years old. He often gets hit by Song Ji-hyo. He is quite dim-witted.

Yang Se-chan

41 years old. He is great at teasing Kim Jong-kook and Song Ji-hyo. He has a 'some' relationship (flirting) with both Jeon So-min and Ji Ye-eun.

Jeon So-min

41 years old. She has a thing with Yang Se-chan and gets jealous of Ji Ye-eun.

Ji Ye-eun

33 years old. Cute. She has a thing with Yang Se-chan, making Jeon So-min jealous.

Producer Shim

LOL